Abstract: A motorized film winding and rewinding mechanism includes a take up drum for advancing a film and a motor to drive the take up drum. A spool for rewinding a film is connected to the take up drum through a series of gears so that it rotates in such a manner to allow transfer of film between the spool and the take up drum. A second system of gears that includes a floatable subgear system that moves between first and second positions connects the motor to the take up drum. A lever moves the floating subgears system from the first position to the second when the film reaches the end of the roll to change the path through the gear system and rotate the take up drum and spool in the opposite direction so that the motor rewinds the film.

Abstract: A film counter indicator dial is journalled in a camera door and carries frame count indicia visible through a window in the door. The dial has peripheral gear teeth to form a worm gear which, when the door is closed, is meshed with a worm which is coupled to a sprocket wheel to be driven by film in both advance and rewind directions of movement. The worm and sprocket wheel are carried by a pressure plate and the dial is driven only when the door is closed. When the door is opened, the dial is returned to an initial position by a spring-urged lever which is engaged with a cam formation on the dial.

Abstract: A camera is disclosed which has a film feed indicator in the form of a member which is disposed behind openings in a wall of a door and which is connected to a pawl engageable in a film aperture to be moved to a latched condition by an initial advance of the film. The indicator is released from the latched condition when the door is opened.

Abstract: A film advance and rewind mechanism is disclosed in which a thumbwheel is rotatable in only one direction and is drivingly coupled to a take-up spool only when rotated, the take-up spool being free to rotate in a rewind direction when a supply spool is rotated in a rewind direction.

Abstract: A film winding safety mechanism is disclosed in which film metering and shutter-actuator mechanisms are driven from a sprocket wheel which is driven by film only when the film is properly loaded in a camera to be advanced by rotation of a take-up spool. The safety mechanism is disabled when no cartridge is installed in a manner such as to permit test operation of the camera shutter.

Abstract: A small pocket type camera is provided which includes a plurality of picture-taking lenses and a corresponding plurality of viewfinder lenses. The lens system is arranged so that upon changing the picture-taking lens from one system to another the appropriate viewfinder lens will automatically be moved to the viewfinder optical axis whereby the magnification of the subject to be photographed, as seen by the user through the viewfinder lens, will correspond to the magnification of the subject as recorded on the film through the picture taking lens.

Abstract: A camera including a film advance mechanism having a film advance plunger which is mounted for reciprocal movement from a rest position to a depressed position for operating the film advance mechanism to move film along an exposure plane and coil it about a take up spool. A film metering finger connected to said film advance mechanism and movable from a retracted position on one side of the exposure plane to an extended position traversing the exposure plane. Film is advanced by depressing the plunger. When the metering finger senses a perforation in the film at a predetermined location, movement of the finger disables the film advance mechanism to prevent further film advancement, even though plunger movement may continue. This disabling is accomplished by separating two adjacent and substantially collinear members which connect the plunger to a ratchet drive mechanism that rotates a film take-up spool.